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Hyunbong Choi, Sanghoon Kim, Sang Ook Kang, Jaejung Ko, Moon-Sung Kang, John N. Clifford, Amparo Forneli, Emilio Palomares, Mohammad K. Nazeeruddin and Michael Grätzel Stepwise Cosensitization of Nanocrystalline TiO2 Films Utilizing Al2O3 Layers in Dye-Sensitized Solar Cells Angewandte Chemie International Edition 47

Article first published online: 24 SEP 2008 | DOI: 10.1002/anie.200802852

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Doubly sensitized: Stepwise cosensitization is carried out on Al2O3-coated nanocrystalline TiO2 layers using two organic dyes (JK-2 and SQ1) having complementary spectral absorption bands in the visible region. The Al2O3 coating results in the retardation of the interfacial charge recombination dynamics at the oxide/sensitizer interface and improves the overall performance of the dye-sensitized solar cells. CB=conduction band.

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